Molex 0026654040 Equivalent & Substitute Parts

Part Overview

The Molex 0026654040 is a rectangular connector header designed for through-hole mounting applications. This shrouded, single-wall header accommodates 4 positions at 0.156" (3.96mm) pitch and features male pin contacts with gold-plated mating surfaces. The connector is classified as Active product status and serves general purpose, automotive, industrial, medical, and telecommunications applications. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate alternative suppliers.

Substiute Parts

0026654040

MolexIn Stock: 7960026654040 Datasheet

Current PartRFQ

3-644615-4

TE Connectivity AMP ConnectorsIn Stock: 18593-644615-4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0026654040 is determined by the following critical parameters:

• Connector Type & Contact Configuration: Header with male pin contacts
• Position Count & Pitch: 4 positions at 0.156" (3.96mm) mating pitch
• Mounting & Termination: Through-hole solder termination with friction lock fastening
• Shrouding & Mechanical Form Factor: Shrouded single-wall design with square contact shape
• Compliance & Environmental: UL94 V-0 flammability rating, ROHS3 compliance, MSL 1 rating

The substitute part TE Connectivity AMP Connectors 3-644615-4 satisfies these core substitution criteria. Both parts maintain identical position count, pitch spacing, mounting method, shrouding configuration, and compliance certifications. Variations in contact finish materials, insulation composition, and dimensional tolerances are within acceptable substitution parameters for this connector category.

Parameter Comparison

Engineering Selection Recommendations

Both the Molex 0026654040 and TE Connectivity 3-644615-4 maintain Active product status and full ROHS3 compliance with MSL 1 rating, confirming long-term availability and environmental regulatory alignment. Selection between these parts should be based on application-specific requirements regarding contact finish material and insulation composition. The Molex part features gold-plated mating contacts with brass material and polyester insulation, while the TE Connectivity substitute provides tin-plated contacts with copper alloy material and glass-filled thermoplastic insulation. Both configurations satisfy UL94 V-0 flammability requirements and friction lock fastening specifications. Dimensional variations in contact post length and insulation height are minor and do not affect interchangeability in standard through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 3-644615-4 directly replace the Molex 0026654040 in existing designs?

A: Yes. Both connectors share identical position count (4), mating pitch (0.156"), mounting method (through-hole), shrouding configuration (shrouded single-wall), and fastening mechanism (friction lock). The connectors are mechanically and electrically compatible for board-to-cable/wire applications.

Q: What are the differences in contact finish between these two parts?

A: The Molex 0026654040 features gold-plated mating contacts (20.0µin thickness) on brass material. The TE Connectivity 3-644615-4 uses tin-plated mating contacts (150.0µin thickness) on copper alloy material. Both finishes provide adequate corrosion resistance and electrical conductivity for general purpose, industrial, and telecommunications applications.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the Molex 0026654040 and TE Connectivity 3-644615-4 are ROHS3 compliant, REACH unaffected, and carry UL94 V-0 flammability ratings. Both maintain MSL 1 (Unlimited) moisture sensitivity classification.

Q: What is the difference in insulation material composition?

A: The Molex part uses polyester insulation, while the TE Connectivity substitute employs thermoplastic material with glass reinforcement. Glass-filled thermoplastic provides enhanced mechanical strength and thermal stability in industrial environments.

Q: Are there any dimensional differences that affect PCB layout?

A: Minor dimensional variations exist. The Molex part has an insulation height of 0.446" (11.33mm) and overall contact length of 0.720" (18.29mm). The TE Connectivity part measures 0.545" (13.84mm) insulation height and 0.700" (17.78mm) overall contact length. These differences are within standard PCB design tolerances and do not require layout modifications.